When did you become so smart, oh wise one?! Sarcasm Explanation in Multi-modal Multi-party Dialogues
Shivani KumarAtharva KulkarniMd. Shad AkhtarTanmoy Chakraborty
Introduces the task of sarcasm explanation in multimodal multi-party dialogues, providing the WITS benchmark dataset and a modality-aware attention framework that generates natural language explanations for sarcastic utterances.
Automated conversational systems struggle to understand figurative speech such as sarcasm, which regularly conveys meaning opposite to literal phrasing through subtle social and contextual cues. While existing research in artificial intelligence has focused heavily on detecting whether sarcasm is present, conversational agents cannot generate appropriate responses without understanding the underlying ironic intention. To address this gap, the article introduces Sarcasm Explanation in Dialogue, a novel task designed to generate natural language explanations that clarify why a particular conversational remark is sarcastic.
The primary objective of the article is to establish a benchmark dataset and evaluate deep learning architectures that combine conversational transcripts with audio and visual cues to automatically produce coherent sarcasm explanations.
To conduct this evaluation, the researchers curated a new dataset named WITS, containing 2,240 sarcastic dialogue scenes annotated with human-written explanations of the underlying satire. The dialogues are derived from 55 episodes of a popular Indian television sitcom and feature multi-party, code-mixed conversations in Hindi and English. Each explanation explicitly captures the source speaker, target individual, sarcastic action, and descriptive context. To process these scenes, the authors developed Modality Aware Fusion, a specialized adapter mechanism that integrates acoustic features (such as vocal pitch and loudness) and visual features (such as facial gestures) into pre-trained language models like BART and mBART using context-aware attention and gating controls.
The findings show that incorporating multimodal signals significantly outperforms text-only language models. The top-performing multimodal model achieved the highest scores across standard text evaluation benchmarks, recording a ROUGE-1 score of 39.69 and a BLEU-4 score of 8.58 compared to 36.88 and 2.89 for text-only BART. Notably, adding audio and visual signals improved speaker identification accuracy by approximately 14 percentage points, reaching 91.07%. Human evaluations further confirmed that multimodal fusion generated more coherent explanations that were more relevant to both the dialogue context and the underlying sarcasm.
These results demonstrate that audio-visual non-verbal signals are vital for interpreting nuanced human communication in conversational agents. Relying solely on textual transcripts limits the ability of language models to identify speaker dynamics and implied meaning. By demonstrating that modular fusion adapters can effectively capture paralinguistic cues without massive architectural overhauls, the article provides a viable technical pathway for reducing misunderstandings in conversational AI deployment.
Deploying organizations should integrate acoustic and visual streams when building interactive dialogue systems that require emotional intelligence and social comprehension. However, development teams must treat current implementations with caution, as human evaluation scores remain modest (averaging around 3 out of 5), and the accuracy for identifying the target of sarcasm dropped slightly when multimodal data was introduced. Future research should prioritize refining target identification, evaluating larger generative foundation models, and expanding datasets beyond situational comedies to encompass broader real-world conversational domains.
- Paper: MELD: A Multimodal Multi-Party Dataset for Emotion Recognition in Conversations, Soujanya Poria et al. (2018). Establishes the foundational conversational benchmark and methodology for modeling multimodal, multi-speaker conversational contexts that the source builds upon for sarcasm explanation.
- Paper: Multimodal Transformer for Unaligned Multimodal Language Sequences, Yao-Hung Hubert Tsai et al. (2019). Introduces crossmodal attention mechanisms for unaligned multimodal sequences, providing the technical basis for the modality-aware fusion used in the source.
- Paper: MISA: Modality-Invariant and -Specific Representations for Multimodal Sentiment Analysis, Devamanyu Hazarika et al. (2020). Demonstrates how factorizing modality-invariant and modality-specific representations improves multimodal sentiment analysis and humor detection.
- Paper: Multimodal Language Analysis in the Wild: CMU-MOSEI Dataset and Interpretable Dynamic Fusion Graph, Amir Zadeh et al. (2018). Pioneers interpretable dynamic multimodal fusion architectures across language, visual, and acoustic inputs in conversational affect recognition.
- Paper: Dialogue act modeling for automatic tagging and recognition of conversational speech, Andreas Stolcke et al. (2000). Provides foundational principles for modeling conversational discourse structure and speech acts in multi-turn dialogues.
- Paper: Do Androids Laugh at Electric Sheep? Humor "Understanding" Benchmarks from The New Yorker Caption Contest, Jack Hessel et al. (2023). Extends multimodal figurative language understanding by benchmarking complex humor comprehension and natural-language joke explanation in vision-language models.
- Paper: Mutual-Enhanced Incongruity Learning Network for Multi-Modal Sarcasm Detection, Yang Qiao et al. (2023). Advances multimodal sarcasm modeling by proposing a mutual-enhanced incongruity learning network combining local object contradictions with global context.
- Paper: Dynamic Routing Transformer Network for Multimodal Sarcasm Detection, Yuan Tian et al. (2023). Builds on cross-modal sarcasm detection by introducing dynamic routing transformers to flexibly capture incongruity across text and visual modalities.
- Paper: SD-Eval: A Benchmark Dataset for Spoken Dialogue Understanding Beyond Words, Junyi Ao et al. (2024). Generalizes the evaluation of non-literal and paralinguistic aspects of spoken dialogue understanding in multimodal conversational models.
- Paper: SECap: Speech Emotion Captioning with Large Language Model, Yaoxun Xu et al. (2024). Shifts classification paradigms to natural language captioning and explanations of complex conversational speech affect using large language models.
- Paper: A survey on multimodal large language models, Shukang Yin et al. (2023). Surveys the broader landscape of multimodal large language model architectures and reasoning benchmarks that follow specialized multimodal dialogue studies.
